X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FInclude%2FProtocol%2FDeviceIo.h;fp=MdePkg%2FInclude%2FProtocol%2FDeviceIo.h;h=c5720899de4cc952dad733a0b76a452be34d0d84;hp=d10cc6fa6f3868927b6c69022c5eb48c171d2318;hb=73fa61fc78853e98f40dbe8063597ebc9015e639;hpb=58125b7a64b7378d78bdeb6da639ff51eb74e38f

diff --git a/MdePkg/Include/Protocol/DeviceIo.h b/MdePkg/Include/Protocol/DeviceIo.h
index d10cc6fa6f..c5720899de 100644
--- a/MdePkg/Include/Protocol/DeviceIo.h
+++ b/MdePkg/Include/Protocol/DeviceIo.h
@@ -36,10 +36,14 @@ typedef struct _EFI_DEVICE_IO_PROTOCOL EFI_DEVICE_IO_PROTOCOL;
 typedef EFI_DEVICE_IO_PROTOCOL  EFI_DEVICE_IO_INTERFACE;
 
 typedef enum {
-  IO_UINT8 = 0,
-  IO_UINT16 = 1,
-  IO_UINT32 = 2,
-  IO_UINT64 = 3
+	IO_UINT8  = 0,
+	IO_UINT16 = 1,
+	IO_UINT32 = 2,
+	IO_UINT64 = 3,
+	MMIO_COPY_UINT8  = 4,
+	MMIO_COPY_UINT16 = 5,
+	MMIO_COPY_UINT32 = 6,
+	MMIO_COPY_UINT64 = 7
 } EFI_IO_WIDTH;
 
 /**                                                                 
@@ -50,7 +54,10 @@ typedef enum {
   @param  Address               The base address of the I/O operations. 
   @param  Count                 The number of I/O operations to perform.
   @param  Buffer                For read operations, the destination buffer to store the results. For write
-                                operations, the source buffer to write data from.                
+                                operations, the source buffer to write data from. If
+																Width is MMIO_COPY_UINT8, MMIO_COPY_UINT16,
+																MMIO_COPY_UINT32, or MMIO_COPY_UINT64, then
+																Buffer is interpreted as a base address of an I/O operation such as Address. 
 
   @retval EFI_SUCCESS           The data was read from or written to the device.
   @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack of resources.